The following table lists the work functions of a few common metals, measured in electron volts. Metal (eV) Cesium 1.9 Potassium 2.2 Sodium 2.3 Lithium 2.5 Calcium 3.2 Copper 4.5 Silver 4.7 Platinum 5.6 Part A Light with a wavelength of 190 nm is incident on a metal surface. The most energetic electrons emitted from the surface are measured to have 4.0 eV of kinetic energy. Which of the metals in the table is the surface most likely to be made of? ▸ View Available Hint(s) O cesium potassium sodium lithium Using these data, answer the following questions about the photoelectric effect. 000 calcium copper silver O platinum Submit Part B Of the eight metals listed in the table, how many will eject electrons when a green laser (g = 510 nm) is shined on them? ▸ View Available Hint(s) ○ 0 1 ○ 2 3 4 5 6 ○ 7 ○ 8 Submit Part C Light with some unknown wavelength is incident on a piece of copper. The most energetic electrons emitted from the copper have 2.7 eV of kinetic energy. the copper is replaced with a piece of sodium, what will be the maximum possible kinetic energy K of the electrons emitted from this new surface? Enter your answer numerically in electron volts to two significant figures. ▸ View Available Hint(s) K = ΕΠΙ ΑΣΦ Submit ? eV
The following table lists the work functions of a few common metals, measured in electron volts. Metal (eV) Cesium 1.9 Potassium 2.2 Sodium 2.3 Lithium 2.5 Calcium 3.2 Copper 4.5 Silver 4.7 Platinum 5.6 Part A Light with a wavelength of 190 nm is incident on a metal surface. The most energetic electrons emitted from the surface are measured to have 4.0 eV of kinetic energy. Which of the metals in the table is the surface most likely to be made of? ▸ View Available Hint(s) O cesium potassium sodium lithium Using these data, answer the following questions about the photoelectric effect. 000 calcium copper silver O platinum Submit Part B Of the eight metals listed in the table, how many will eject electrons when a green laser (g = 510 nm) is shined on them? ▸ View Available Hint(s) ○ 0 1 ○ 2 3 4 5 6 ○ 7 ○ 8 Submit Part C Light with some unknown wavelength is incident on a piece of copper. The most energetic electrons emitted from the copper have 2.7 eV of kinetic energy. the copper is replaced with a piece of sodium, what will be the maximum possible kinetic energy K of the electrons emitted from this new surface? Enter your answer numerically in electron volts to two significant figures. ▸ View Available Hint(s) K = ΕΠΙ ΑΣΦ Submit ? eV
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:The following table lists the work functions of a few common
metals, measured in electron volts.
Metal
(eV)
Cesium
1.9
Potassium 2.2
Sodium
2.3
Lithium
2.5
Calcium
3.2
Copper
4.5
Silver
4.7
Platinum
5.6
Part A
Light with a wavelength of 190 nm is incident on a metal surface. The most energetic electrons emitted from the surface are measured to have 4.0 eV of
kinetic energy. Which of the metals in the table is the surface most likely to be made of?
▸ View Available Hint(s)
O cesium
potassium
sodium
lithium
Using these data, answer the following questions about the
photoelectric effect.
000
calcium
copper
silver
O platinum
Submit
Part B
Of the eight metals listed in the table, how many will eject electrons when a green laser (g = 510 nm) is shined on them?
▸ View Available Hint(s)
○ 0
1
○ 2
3
4
5
6
○ 7
○ 8
Submit
Part C
Light with some unknown wavelength is incident on a piece of copper. The most energetic electrons emitted from the copper have 2.7 eV of kinetic energy.
the copper is replaced with a piece of sodium, what will be the maximum possible kinetic energy K of the electrons emitted from this new surface?
Enter your answer numerically in electron volts to two significant figures.
▸ View Available Hint(s)
K =
ΕΠΙ ΑΣΦ
Submit
?
eV
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